Table 1.

Clinicopathological features of 15 ESCC patients

Clinicopathological features	No. of patients (n = 15)
Sex
Male	11
Female	4
Age
≤ 50 y	3
51-59 y	8
≥ 60 y	4
Phase
I	5
II	7
III	3
IV	0
Tumor size
< 3.0 cm	4
3.0 to < 5.0 cm	10
5.0 to < 7.0 cm	1
≥ 7.0 cm	0
Lymph node metastasis
Present	12
Absent	3
Distant metastasis
Present	2
Absent	13
Smoking history
Smoker	11
Non-smoker	4
Drinking history
Drinking	9
Never-drinking	6
Tumor histology
Adenocarcinoma	0
Squamous cell carcinoma	15